Possible NULL Dereference When Processing CMS KeyTransportRecipientInfo
Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denial of Service. When a CMS EnvelopedData message that uses KeyTransportRecipientInfo with RSA-OAEP encryption is processed, the optional parameters field of RSA-OAEP SourceFunc algorithm identifier is examined without checking for its presence. This results in a NULL pointer dereference if the field is missing. Applications and services that call CMS_decrypt() on untrusted input (e.g., S/MIME processing or CMS-based protocols) are vulnerable. The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.
CVE-2026-28390
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-28390
OpenSSL
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "OpenSSL",
"product": "OpenSSL",
"versions": [
{
"status": "affected",
"version": "3.6.0",
"lessThan": "3.6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.5.0",
"lessThan": "3.5.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.4.0",
"lessThan": "3.4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.3.0",
"lessThan": "3.3.7",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.0.0",
"lessThan": "3.0.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "1.1.1",
"lessThan": "1.1.1zg",
"versionType": "custom"
},
{
"status": "affected",
"version": "1.0.2",
"lessThan": "1.0.2zp",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-28390
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28264 · Revision 1
- Added to Heist Feed
- Publisher date